UPDATE - 38 weeks pregnant Hard Bump & sore?

Thank you to those who answered my question....It is always hard and yes, I am also scared that I am going to have a large baby?? My friend was big before she was pregnant and her bump is small. I am measuring a week ahead and have done all the way through my pregnancy. Its like a big, hard, beach ball!! I can hardly walk somedays and I also am finding it difficult to get behind the wheel as I am small and have to have seat as far forward as poss. I need to drive cos I have to take my daughter to school and pick her up as her Dad works away...Does a big, hard bump mean its all baby and that Im going to have a big baby??